National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Allentown, Lehigh Valley International Airport (KABE)

Lat: 40.65°NLon: 75.45°WElev: 384ft.

Fair

33°F

1°C

Humidity 82%
Wind Speed Calm
Barometer 30.56 in (1035.1 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Oct 6:51 am EDT
Extended Forecast for

Mertztown PA

Freeze Warning October 18, 07:15am until October 18, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning October 18, 07:15am until October 18, 09:00am

    NOW until 9:00am Sun

    Freeze Warning

  • Today

    High: 58 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Areas of frost after 2am. Otherwise, clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Areas of frost before 10am. Otherwise, increasing clouds, with a high near 64. Northeast wind around 5 mph.

    High: 64 °F

    Areas Frost
    then
    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 44. North wind around 5 mph.

    Low: 44 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 67. North wind around 10 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Today
Widespread frost before 9am. Otherwise, sunny, with a high near 58. Calm wind becoming northeast around 5 mph.
Tonight
Areas of frost after 2am. Otherwise, clear, with a low around 33. Calm wind.
Monday
Areas of frost before 10am. Otherwise, increasing clouds, with a high near 64. Northeast wind around 5 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 44. North wind around 5 mph.
Tuesday
Sunny, with a high near 67. North wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mertztown PA
 40.51°N 75.69°W (Elev. 499 ft)
Last Update:
6:31 am EDT Oct 18, 2026
Forecast Valid:
7am EDT Oct 18, 2026-6pm EDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation